1005040565 has 8 divisors (see below), whose sum is σ = 1206460320. Its totient is φ = 803758032.

The previous prime is 1005040529. The next prime is 1005040577. The reversal of 1005040565 is 5650405001.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1005040565 - 2²⁴ = 988263349 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17435 + ... + 48104.

It is an arithmetic number, because the mean of its divisors is an integer number (150807540).

Almost surely, 2^1005040565 is an apocalyptic number.

It is an amenable number.

1005040565 is a deficient number, since it is larger than the sum of its proper divisors (201419755).

1005040565 is an equidigital number, since it uses as much as digits as its factorization.

1005040565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68611.

The product of its (nonzero) digits is 3000, while the sum is 26.

The square root of 1005040565 is about 31702.3747533209. The cubic root of 1005040565 is about 1001.6773731794.

Adding to 1005040565 its reverse (5650405001), we get a palindrome (6655445566).

The spelling of 1005040565 in words is "one billion, five million, forty thousand, five hundred sixty-five".